Location
London

Hours
Full Time

Salary
Negotiable

About the Role
The London Stock Exchange Group (LSEG) is seeking an experienced, dedicated, and driven Senior Attack Monitoring Analyst to join the Global Security Operations Centre (GSOC) team. As part of LSEG Security Operations, you will play a critical role in continuously monitoring and responding to cyber security incidents using people, process, and technology. This role involves identifying and responding to cyber security incidents and enhancing the defensive capabilities of the GSOC. The ideal candidate will have a strong technical background, a firm understanding of modern attack techniques, and knowledge of the typical lifecycle of cyber attacks. You will triage security events, respond methodically to incidents using playbooks, operate SIEM tools such as Splunk, QRadar, or LogRhythm, and develop monitoring dashboards and run books. Staying current with vulnerabilities, attacks, and countermeasures is essential, as is researching threat intelligence to improve detection capabilities. You will work in a fast-paced environment, collaborating with a dynamic team committed to innovation, quality, and continuous improvement.

Experience
- Operating or administrating SIEM platforms (e.g., Splunk, QRadar, LogRhythm)
- Strong understanding of networks including TCP/IP stack, typical organizational architectures, and common protocols abused by malware
- Security event analysis, triage, incident handling, and root-cause identification
- Knowledge of attacker tools, techniques, and procedures, ideally from direct experience
- Cyber security knowledge gained academically or within corporate environments
- Ability to remain calm and effective in a fast-paced, demanding environment
- Strong verbal and written communication and collaboration skills

About you
Detail-oriented and proactive with a passion for cyber security. You thrive in a collaborative environment and are committed to continuous learning and improvement. You value integrity, partnership, excellence, and change, aligning with LSEG’s culture and values. You are motivated to contribute to a diverse and inclusive workplace and support sustainability and community initiatives.

Qualifications
- Security industry certifications such as OSCP, GIAC, CCNA are highly desirable
- Certification demonstrating SIEM operational competence
- Proficiency in one or more programming languages such as Python, PowerShell, Java, or C#